CN104582855B - 干磨粒状材料的方法 - Google Patents
干磨粒状材料的方法 Download PDFInfo
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- CN104582855B CN104582855B CN201380025858.7A CN201380025858A CN104582855B CN 104582855 B CN104582855 B CN 104582855B CN 201380025858 A CN201380025858 A CN 201380025858A CN 104582855 B CN104582855 B CN 104582855B
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- metal oxide
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- 238000000034 method Methods 0.000 title claims description 26
- 239000013590 bulk material Substances 0.000 title claims description 14
- 238000009837 dry grinding Methods 0.000 title description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 42
- 239000002245 particle Substances 0.000 claims abstract description 33
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 21
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 53
- 239000000203 mixture Substances 0.000 claims description 28
- 229920003023 plastic Polymers 0.000 claims description 14
- 239000004033 plastic Substances 0.000 claims description 14
- 229910002804 graphite Inorganic materials 0.000 claims description 13
- 239000010439 graphite Substances 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- -1 polypropylene Polymers 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 8
- 239000013528 metallic particle Substances 0.000 claims description 8
- 238000003801 milling Methods 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 6
- 239000011777 magnesium Substances 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000011133 lead Substances 0.000 claims description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 5
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229910052703 rhodium Inorganic materials 0.000 claims description 4
- 239000010948 rhodium Substances 0.000 claims description 4
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052707 ruthenium Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229920002873 Polyethylenimine Polymers 0.000 claims description 3
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- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000011135 tin Substances 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 150000003949 imides Chemical class 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 239000006227 byproduct Substances 0.000 claims 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 2
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- 239000001301 oxygen Substances 0.000 claims 2
- 239000003054 catalyst Substances 0.000 claims 1
- 229910000428 cobalt oxide Inorganic materials 0.000 claims 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- 229910000464 lead oxide Inorganic materials 0.000 claims 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 claims 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 claims 1
- 239000000047 product Substances 0.000 claims 1
- 239000002356 single layer Substances 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 2
- PYTMYKVIJXPNBD-UHFFFAOYSA-N clomiphene citrate Chemical compound [H+].[H+].[H+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.C1=CC(OCCN(CC)CC)=CC=C1C(C=1C=CC=CC=1)=C(Cl)C1=CC=CC=C1 PYTMYKVIJXPNBD-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 150000001336 alkenes Chemical class 0.000 description 4
- 238000001069 Raman spectroscopy Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 238000003841 Raman measurement Methods 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 239000011365 complex material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000005462 imide group Chemical group 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910000473 manganese(VI) oxide Inorganic materials 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 150000002927 oxygen compounds Chemical class 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
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- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
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- C04B35/628—Coating the powders or the macroscopic reinforcing agents
- C04B35/62844—Coating fibres
- C04B35/62857—Coating fibres with non-oxide ceramics
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
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- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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Abstract
通过介质球磨制备的石墨烯具有非常小的颗粒尺寸、相对高的表面积和独特的长径比。其独特地适合于通过涂覆或混合其它颗粒来制备纳米复合物。可用高表面积、相对低长径比的石墨烯涂覆金属或金属氧化物或者将金属或金属氧化物与高表面积、相对低长径比的石墨烯成形为复合物。如果添加的颗粒大于石墨烯，那么用石墨烯涂覆它们，并且如果它们为大约相同的近似尺寸，那么形成纳米复合物。该纳米复合物对于制备特别是用于蓄电池和超电容器应用的电极是有用的。
Description
致有关人士：
是我们居住在密歇根州Ingham郡东兰辛市的韩国公民Inhawan Do、居住在密歇根州Ingham郡东兰辛市的美国公民Michael Knox、居住在密歇根州Ingham郡东兰辛市的美国公民Scott Murray、和居住在密歇根州Ingham郡东兰辛市的美国公民Robert M.Privette发明了新型和新颖的干磨粒状材料的方法
以下是其申请文件。
背景技术
本发明涉及具有金属或金属氧化物的石墨烯薄层纳米复合物，和纳米涂覆有金属或金属氧化物的石墨烯薄层。涂覆和复合的颗粒作为电极并且对于电应用是有用的。
石墨通过处于高度结构化的薄层状态的许多碳层形成。当从石墨超结构(superstructure)分离时，这些薄层统称为石墨烯。石墨烯具有令人关注的化学、物理和电性质。这些性质使石墨烯成为非常贵重的产品。由颗粒直径、颗粒宽度、和表面积限定的石墨烯品质确定了其工业适用性。对于电应用，用金属颗粒涂覆或复合石墨烯是有利的。
总部位于密歇根兰辛的Xg Sciences,Inc.通过高能量、塑料介质、干燥的机械碾末方法制备了“C”级石墨烯。级别尺寸特性使得其独特地适合于用纳米颗粒涂覆或与纳米颗粒混合以形成用于电极的有用材料。
申请人意识到2011年5月12日出版的美国专利公开2011/0111303A1显示了用硅处理石墨烯的湿式方法。
此外，专利权人还意识到以Peukert等人名义的EP2275385，其中提出用于研磨粒状材料的湿式方法，其中研磨介质为钇稳定的氧化锆。
发明内容
通过介质球磨制备的石墨烯具有非常小的颗粒尺寸与相对高的表面积。其独特地适合于通过涂覆或混合其它颗粒来制备纳米复合物。可用高表面积、相对低长径比的石墨烯涂覆金属或金属氧化物或者将金属或金属氧化物与高表面积、相对低长径比的石墨烯成形为复合物。在本文中发明人认为本发明的材料具有独特的长径比。与硅混合的磨碎石墨具有相当接近1的长径比，来自GO方法的石墨烯、等轴生长的石墨烯、或来自插层加热方法的石墨烯具有非常高的长径比。本发明的适中长径比的石墨烯较好地涂覆1－4微米颗粒并且较好地与甚至更小的纳米颗粒混合。
基于拉曼光谱学与长径比、颗粒尺寸、和/或表面积，提供本发明中独特的石墨烯。
基于从拉曼光谱学和测量的峰高计算的以下表格，生成以下表格。
天然石墨具有非常高的G/D比例。研磨成非晶粉末的石墨具有该G/D比例。本发明的材料从高的开始，并且加工的材料越多则趋于2。非晶石墨还具有G峰红移至2000cm－1。本发明的材料可具有小的红移，但是从数据的品质其难以确定。非常高的表面积和长径比确认其主要为石墨烯纳米薄层。
机械剥离的石墨烯不同于磨碎石墨：其保持强烈的晶态sp2结构。随着石墨被研磨成非晶的，G与D拉曼谱线的比例趋于2并且G谱线从1560cm－1红移至2000cm－1。将G峰称作石墨烯峰。D峰称作无序峰。石墨研磨的越多，G峰减少和D峰增加的越多。
如果添加的颗粒比石墨烯大，那么用石墨烯涂覆它们，并且如果它们为大约相同的近似尺寸，那么形成纳米复合物。该纳米复合物对于制备特别是用于蓄电池和电容器应用的电极是有用的。
附图说明
图1是Si/石墨烯的蓄电池性能的图表(200－250m2/g，100分钟加工时间)。
本发明
因此，在一个实施方案中，存在干磨粒状材料的方法，其中在非层状材料的存在下，至少一种粒状材料是层状材料，以获得组合物，其中将该层状材料剥离并且其中将该非层状材料与该剥离的材料复合。
剥离的材料具有10微米乘5nm厚或更小的颗粒尺寸。此外，除了控制碾磨介质的硬度以外，还通过控制碾磨介质的表面能来控制干磨。优选地，碾磨介质具有的表面能基本上等于层状材料的表面能。
在第二实施方案中，存在干磨粒状材料的方法，其中在选自i.陶瓷、ii.玻璃、iii.石英的粒状材料的存在下，至少一种粒状材料为层状材料，以获得组合物，其中将该层状材料剥离并且其中用该剥离的材料涂覆粒状材料。
剥离的材料具有500纳米或更小的颗粒尺寸。此外，除了控制碾磨介质的硬度以外，还通过控制碾磨介质的表面能来控制干磨。
在第四实施方案中，存在通过第一实施方案获得的复合产品和通过第二实施方案获得的涂覆产品。
在一个实施方案中，本发明提供一种在非层状材料的存在下剥离粒状材料以获得组合物的方法，其中至少一种粒状材料是层状材料，其中将所述层状材料剥离并且其中将该非层状材料与该剥离的材料复合，该剥离的材料具有10微米乘5nm厚或更小的颗粒尺寸，并且其中除了使用塑料碾磨介质控制碾磨介质的硬度以外还通过控制碾磨介质的表面能来控制剥离，其中该剥离的材料具有10-25的长径比，其中该非层状材料选自基本上由以下材料组成的组：
i.粒状金属，和
ii.粒状金属氧化物，
其中该层状材料为石墨，和
其中该碾磨介质具有的表面能基本上等于层状材料的表面能。
在本发明的一个实施方案中，提供了一种物质组合物，其包含复合有石墨烯的颗粒，其中该颗粒选自基本上由金属颗粒和金属氧化物颗粒组成的组，其中该金属和金属氧化物颗粒具有100微米或更小的尺寸，所述物质组合物由如权利要求1所述的方法制造，其中该剥离的材料具有10-25的长径比。
在本发明的一个实施方案中，金属和金属氧化物颗粒具有1微米或更小的尺寸。
本发明还提供一种电极，所述的电极由前述组合物制造。本发明还涉及包含该电极的电容器
具体实施方式
通过本发明的方法制备的石墨烯具有相对窄的、比石墨大的长径比。对于本发明，高于5和低于200的长径比是优选的并且更优选的是高于10和低于25的长径比。
小的(即1－5纳米厚和50－100纳米直径)、高表面积(高于500BET)、适中长径比的石墨烯是用于用小的金属或金属氧化物颗粒涂覆的独特尺寸。
在本发明中有用的金属是类金属硅、和金属锡、铁、镁、锰、铝、铅、金、银、钛、铂、钯、钌、铜、镍、铑、及任何上述的合金。
在本发明中有用的塑料碾磨介质具有在布氏标度中3－100的硬度。塑料碾磨介质选自基本上由聚缩醛、聚丙烯酸酯例如甲基丙烯酸甲酯、聚碳酸酯、聚苯乙烯、聚丙烯、聚乙烯、聚四氟乙烯、聚环乙亚胺、聚氯乙烯、聚胺－酰亚胺、基于酚类和甲醛的热固性树脂、以及任何指定的塑料的合金。
在本发明中有用的粒状金属氧化物是选自硅、锡、铁、镁、锰、铝、铅、金、银、钛、铂、钯、钌、铜、镍、铑、钨、钴、钼的氧化物、和任何上述指定的金属氧化物的合金，其中金属和金属氧化物颗粒具有100微米或更小的尺寸。优选的是10微米或更小的颗粒尺寸，并且最优选的是5微米或更小的颗粒尺寸。
在本发明中金属碳化物、金属氮化物以及非层状材料是有用的。
在本发明中有用的石墨烯优选具有5nm或更小的厚度。
实施例
实施例1
将两克天然石墨和1g微米尺寸的Si(1－4μm)装载到65ml不锈钢研磨容器中并且在24g聚甲基丙烯酸甲酯球的存在下进行碾磨。聚甲基丙烯酸甲酯球由两种不同的尺寸即直径1/4英寸和3/8英寸构成。以<1500rpm操作高能研磨机并且其夹持速度(clamp speed)为1060次循环/分钟。可用聚碳酸酯、聚苯乙烯、聚丙烯、聚乙烯、聚四氟乙烯、聚环乙亚胺、聚氯乙烯和聚胺－酰亚胺替代聚甲基丙烯酸甲酯球以控制在固定的碾磨时间下的表面积、和碾磨效率、石墨烯尺寸、孔隙率分布、Si与石墨烯表面之间的接触品质。取决于碾磨时间(60－500分钟)和Si/石墨烯组成以及球材料的类型，所制备的Si/石墨烯复合物的表面积可为100m2/g-700m2/g不等。
下文将Si/石墨烯(200－250m2/g，100分钟加工)样品作为用于锂离子蓄电池的阳极的蓄电池性能的结果绘图。Si/石墨烯在100mA/g下在35次循环内显示高容量(>800mAh/g，电极负载)，这支持了低成本、简单、省时、环境友好、灵活的方法以制备用于能量应用的高性能石墨烯基复合物材料。容量的一些波动是由温度的变化所致。
实施例2
将两克天然石墨和1g纳米尺寸的金属氧化物(Fe2O3、NiO、CoO3、MnO3)装载到65ml不锈钢研磨容器中并且在24g聚甲基丙烯酸甲酯球的存在下进行碾磨。产物可用作用于锂蓄电池的阳极材料和用于超电容器的电极。
Claims (28)
1.一种在非层状材料的存在下剥离粒状材料以获得组合物的方法，其中至少一种粒状材料是层状材料，其中将所述层状材料剥离并且其中将该非层状材料与该剥离的材料复合，该剥离的材料具有10微米乘5nm厚或更小的颗粒尺寸，并且其中除了使用塑料碾磨介质控制塑料碾磨介质的硬度以外还通过控制塑料碾磨介质的表面能来控制剥离，其中该剥离的材料具有10-25的长径比，其中该非层状材料选自基本上由以下材料组成的组：
i.粒状金属，和
ii.粒状金属氧化物，
其中该层状材料为石墨，和
其中该塑料碾磨介质具有的表面能基本上等于层状材料的表面能。
2.如权利要求1所述的方法，其中该塑料碾磨介质在布氏标度中具有3－100的硬度。
3.如权利要求1所述的方法，其中该剥离的材料具有50nm－10微米的尺寸。
4.如权利要求1所述的方法，其中该塑料碾磨介质选自基本上由以下组成的组：
i.聚甲基丙烯酸甲酯，
ii.聚碳酸脂，
iii.聚苯乙烯，
iv.聚丙烯，
v.聚乙烯，
vi.聚四氟乙烯，
vii.聚环乙亚胺，
viii.聚氯乙烯，
ix.聚胺－酰亚胺，和
x.i－ix中任何合金。
5.如权利要求1所述的方法，其中该粒状金属选自基本上由以下组成的组：
i.硅，
ii.锡，
iii.铁，
iv.镁，
v.锰，
vi.铝，
vii.铅，
viii.金，
ix.银，
x.钛，
xi.铂，
xii.钯，
xiii.钌，
xiv.铜，
xv.镍，
xvi.铑，和
xvii.i－xvi中任何的合金。
6.如权利要求1所述的方法，其中该粒状金属氧化物选自基本上由以下的氧化物组成的组：
i.硅，
ii.锡，
iii.铁，
iv.镁，
v.锰，
vi.铝，
vii.铅，
viii.金，
ix.银，
x.钛，
xi.铂，
xii.钯，
xiii.钌，
xiv.铜，
xv.镍，
xvi.铑，和
xvii.i－xvi中任何的合金。
7.如权利要求1所述的方法，其中非层状材料具有小于100微米的尺寸。
8.一种物质组合物，其包含复合有石墨烯的颗粒，其中该颗粒选自基本上由金属颗粒和金属氧化物颗粒组成的组，其中该金属颗粒和金属氧化物颗粒具有100微米或更小的尺寸，所述物质组合物由如权利要求1所述的方法制造，其中该剥离的材料具有10-25的长径比。
9.如权利要求8所述的物质组合物，其中该金属颗粒和金属氧化物颗粒具有10微米或更小的尺寸。
10.如权利要求8所述的物质组合物，其中该金属颗粒和金属氧化物颗粒具有1微米或更小的尺寸。
11.如权利要求8所述的物质组合物，其中石墨烯小于5nm厚。
12.如权利要求8所述的物质组合物，其中石墨烯为单层厚的。
13.如权利要求8所述的物质组合物，其中石墨烯的氧含量为10原子％或更少。
14.如权利要求8所述的物质组合物，其中该金属颗粒选自基本上由铁、镁、钴、钼和铅组成的组。
15.如权利要求8所述的物质组合物，其中该金属氧化物颗粒选自基本上由氧化铁、氧化镁、氧化钴、氧化钼、和氧化铅组成的氧化物组。
16.如权利要求8所述的物质组合物，其中该石墨烯具有小于500纳米的颗粒尺寸。
17.如权利要求8所述的物质组合物，其中该石墨烯具有大于500m2/g BET的表面积、1-5纳米的厚度和50-100纳米的直径。
18.如权利要求8所述的物质组合物，其中该金属颗粒比与它们进行复合的石墨烯大。
19.如权利要求8所述的物质组合物，其为纳米复合物。
20.一种电极，其由权利要求8的组合物制造。
21.一种蓄电池，其包含至少一个如权利要求20所述的电极。
22.一种电容器，其包含如权利要求20所述的电极。
23.通过权利要求1的在非层状材料的存在下剥离粒状材料以获得组合物的方法制备的产品，其中至少一种粒状材料是层状材料，其中将所述层状材料剥离并且其中将所述非层状材料与所述剥离的材料复合，所述剥离的材料具有10微米乘5nm厚或更小的颗粒尺寸，其中该剥离的材料具有10-25的长径比，并且其中除了使用塑料碾磨介质控制所述塑料碾磨介质的硬度以外还通过控制所述塑料碾磨介质的表面能来控制所述剥离，所述硬度在布氏标度中为3-100。
24.一种电极，其由如权利要求23所述的产品制备。
25.一种催化剂，其由如权利要求23所述的产品制备。
26.一种涂料，其由如权利要求23所述的产品制备。
27.一种电子部件，其由如权利要求23所述的产品制造。
28.一种导热部件，其由如权利要求23所述的产品制造。
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| PCT/US2013/038967 WO2013173053A1 (en) | 2012-05-18 | 2013-05-01 | Process of dry milling particulate materials |
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| US20130309495A1 (en) | 2013-11-21 |
| EP2849887B1 (en) | 2024-03-20 |
| EP4404227A2 (en) | 2024-07-24 |
| KR102107868B1 (ko) | 2020-05-07 |
| WO2013173053A1 (en) | 2013-11-21 |
| JP6618800B2 (ja) | 2019-12-11 |
| US20160256873A1 (en) | 2016-09-08 |
| EP2849887A1 (en) | 2015-03-25 |
| JP2018134639A (ja) | 2018-08-30 |
| KR20150035536A (ko) | 2015-04-06 |
| CN104582855A (zh) | 2015-04-29 |
| JP2015526264A (ja) | 2015-09-10 |
| EP2849887A4 (en) | 2016-01-06 |
| EP4404227A3 (en) | 2024-08-21 |
| TW201402458A (zh) | 2014-01-16 |
| TWI589524B (zh) | 2017-07-01 |
| US10232377B2 (en) | 2019-03-19 |
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